13. He had a history of incidents with guns and was ok to buy a shotgun in VA

I'm not a fan of shooter type video games, but I think the gun accessibility - for someone with a history of violence - is a far bigger issue.

If he'd been delayed in getting the gun at that time, who knows, maybe he would have received effective treatment or some how else turned away, before he succeeded in obtaining a gun and killing a dozen random people. Maybe he would have ended up killing eventually anyway, but THIS spree might have been avoided. The innocent people going about their daily lives deserve that chance of averting tragedy.